Plunger operated pipette



FIG. 1 is a perspective view of a plunger operated pipette showing my new design;

FIG. 2 is a side elevational view thereof; _

FIG. 3 is a left end elevational view thereof; and

FIG. 4 is a right end elevational view thereof. 

The ornamental design for a plunger operated pipette, as shown. 